Mailed payments must have a U.S. Postal Service postmark on or before the due date to avoid a late-payment penalty.
Mail payments to:
Marion County Treasurer
PO Box 6145
Indianapolis, IN 46206-6145
Please be aware that a postage meter postmark affixed by someone other than the U.S. Postal Service (i.e., a business or third-party mailing facility) will be acceptable unless it is overwritten by a Postal Service postmark. This may occur if the Post Office is processing mail after the property tax due date. In this instance, the U.S. Postal Service postmark will prevail.
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